Javascript Practice 19: JS Hero - String: length

 

Question: 

 

Write a function length that takes a string and returns the number of characters of the string.

Example: length('sun') should return 3.

 

 

 

 

Answer: 

 

function length (string) {

return string.length;

};

 

> function name is length
> it is a function expression
> parameter is string
> statement is return string.length; enclosed in curly brackets
> this function returns a statement that will provide the length of the argument / parameter - 'string'
> length property of a String object contains the length of the string

> length is provided in UTF-16 code units

> length property returns the number of code units in the string

> for an empty string, length is 0